{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chem Quiz #4 - i ID Name NSCE HOUqubg/DCHEM-Zl3ID 00d...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: i . ID Name NSCE HOUqubg /DCHEM-Zl3ID# 00d}? March17,2008 Dr. Miertschin CHEM—213 Quiz #4 — Buffers Please show your work for full credit. Use correct units and appropriate number of significant figures and circle or box your answers. All problems refer to aqueous solutions at 250°C. 1. Disinfectant solutions for medical equipment sterilization may contain a mixture of hypochlorous acidiHClvG, and sodium hypochlorite, NaClO. The Ka of hypochlorous acid is 3.0 X 10'8. Calculate the pH of a solution made from 0.063 M HClO and 0.075 M NaCiO. P [F] : __ I 0.9 464 Mam/‘0‘? [Hg %%,J : MW: 252x10“3:2.§-></L7“W a . , 0:07? W . 5 0.075 2. Calculate the pH aftsr 0.015 mol of NaOH is added to 1.0 L f the solution in #1 above. “HOW OHl-‘aqlw as (10% (4206.4) 0.093 0.015" 0.075 woo ““0015 +0.05 0.0%? O 0(090 PH: Clojtimw‘?) H09 {fie} ‘ 752+O.27: 7.7? / Equations & a Constant [base] pH = —Iog[H3o*] Kw = 1.0 x1044 @ 25°C Kw =Ka - Kb PH : PKa + log [acid] ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern